What does it mean when a Pops traffic channel is temporarily unavailable?

When a traffic channel is under maintenance, it will be shown as "Temporarily Unavailable" and won't be available for volume. If a channel becomes permanently unavailable, it will be removed from the Channel Optimization tab.

Channel statuses cannot be edited while a channel is unavailable, however, when the channel is back up and running, the settings you had applied previously will be restored.

Reporting will still include past performance data for unavailable channels.